IBM PS/2 CL57 SX

Compiled from a hardware survey and IBM's product records. A dash means no source records the value.

Start here when the CL57 SX does not start or work correctly. Work through the numbered steps in order and, where a step asks a question, follow its Yes or No branch.

1. Make sure the printer is correctly connected and is powered-on.
2. Run the printer self-test.

If the printer self-test does not run correctly, the problem is in the printer. Refer to the printer service manual.

If the printer self-test runs correctly, do the following.

1. Verify the port settings in configuration.
2. Install a wrap plug on the port (indicated in configuration) and run the advanced diagnostic tests.
3. If the advanced diagnostic tests (with the wrap plug installed) do not detect a failure, replace the printer cable. If the problem is not corrected, replace the system board.

The following auxiliary input devices may be available for IBM ThinkPad models.

• Numeric keypad
• Mouse (PS/2 compatible)
• External keyboard (with Keyboard/Miniature Mouse cable)

• If you suspect a problem with any of the auxiliary input devices (listed above), replace the device.

  If the problem is not corrected, replace the following FRUs one at a time to correct the problem.

  • Keyboard control card
  • System board

• If the computer receives an incorrect keyboard response, remove other external devices, check the keyboard connections, and recheck the keyboard responses. If the problem remains, replace the following FRUs one at a time to correct the problem.

  • Keyboard
  • Keyboard control card
  • System board
• If a 00030100 error message appears, power-off the computer and the external devices. Then power-on the computer before you power-on the external devices.

Customer diagnostics can eliminate defective memory so no memory error code appears at power-on reset. After you replace a defective memory module on the system board or IC DRAM card, run Automatic Configuration. Otherwise, the new memory will not be recognized. (If you have to run configuration with your own diskette, be sure the customer has all the correct option diskettes available.) Power-off the computer before removing or replacing parts.

The Installed Devices List shows the presence of devices in the computer. If an adapter or device is missing from the list, you might have one of the following conditions.

Warning: A customized setup configuration (other than default settings) might exist on the computer you are servicing. Running Automatic Configuration can alter those settings. Note the current configuration settings (using the View configuration) and verify that the same settings are in place when service is complete.

• The protected partition on the hard disk or the Reference Diskette you are using does not contain the code required to support that device.
• An adapter or device is defective.
• The device missing from the list is an unrecognizable drive or adapter.
• The device missing from the list requires an additional diskette.
• A power supply voltage is incorrect (see Power Systems Checkout).

If the adapter is on the list, run the adapter diagnostics tests. If the list contains an adapter or device that is not installed, go to Undetermined Problem.

Note: One or all of the batteries can discharge if there is a short circuit in the computer.

1. Replace the failing FRU if the power supply problem is caused by a short circuit.
2. Determine if one (or all) of the batteries have become discharged. Replace a discharged battery with a known-good spare.
3. Observe the Battery ID indicators or swap the two battery packs to determine which one has become discharged.

The test procedures for each power supply are found on the following pages.

• Testing the AC Adapter
• Testing the Battery Pack
• Testing the Backup Battery

None of the above? Follow the steps below.

If the Power-On indicator is not on, check the power cord of the AC adapter for proper installation and continuity.

1. If any noise can be heard from the AC adapter when it is plugged into line voltage, replace the AC adapter with a new one.

   If no noise can be heard from the adapter, go to Step 3.

2. If the noise still comes from the new AC adapter, suspect the computer. Replace the AC adapter with the original one, then go to the next step. If no noise comes from the new adapter, the original adapter has the problem.

3. Unplug the AC adapter cable from the computer and measure the output voltages at the plug of the AC adapter cable. Connect the minus lead of the volt-ohm meter to pin 3 during the measurement.

   

   Pin	Voltage (V dc)
   1	+18 to +22
   2	+17 to +21
   3	GND
   4	Communication GND

• If the voltages are not correct:
  1. Unplug the AC adapter from the ac power outlet and leave it for a few minutes.
  2. Plug the AC adapter into the ac outlet.
  3. Measure the output voltages of the AC adapter.
  4. If the voltages are still not correct, replace the AC adapter.
• If the voltages are OK, plug the cable into the computer and try the failing operation again.

If the problem still remains, replace the voltage converter. If the problem disappeared, suspect the installation and continuity of the AC adapter cable.

1. Remove each battery pack and measure the voltage at the battery terminals between (+) and (−).

   

   Terminal	Voltage (V dc)
   (+)	+12 to +18
   (T)	Thermal Detection
   (−)	Ground

   • If the voltage is less than +12 V dc, the battery pack is discharged or defective.
   • If the voltage is more than +12 V dc, go to the next step.

2. Using a low-power ohm meter, measure the resistance at the battery terminals between (T) and (−). The resistance must be 500 ohms to 20 kilohms.

   If the resistance is out of range, replace the battery pack.

1. Remove the keyboard and the top cover.
2. Disconnect the battery connector from the system board.

3. Measure the voltage of the backup battery.

   

   Wire	Voltage (V dc)
   Red	+2.5 to +3.7
   Black	Ground

If the voltage is correct, replace the system board. If it is not, the backup battery is discharged by a short circuit or is defective.

1. Power-on the computer.
2. When the cursor moves to the upper right, press Ctrl+Alt+Ins to start the system program. If the IBM logo does not appear, insert the backup copy of the Reference Diskette into the diskette drive, press Ctrl+Alt+Del, then repeat this step.
3. Advance to the Main Menu.
4. Press Ctrl+A to run the system checkout.

If the display problem occurs only when using an external display, use the following instructions to correct the problem.

Note: Before you replace a display, check the following list to see if it is connected correctly.

• 8506 and 8508 displays must be connected to an Image Adapter/A or an Image-I Adapter/A.
• 63XX and 85XX systems support either 63XX or 85XX displays.
• 85XX systems with an XGA-2 adapter support 95XX displays.
• 95XX systems support either 63XX, 85XX, or 95XX displays.
• ThinkPad models support either 85XX or 95XX displays.

If the screen is rolling, replace the display assembly. If that does not correct the problem, replace FRUs in the following order until the problem goes away:

1. Video card
2. Display adapter (any type)
3. System board
4. Bus adapter (if used)

If the screen is not rolling, run the display self-test as follows:

1. Power-off the computer and display.
2. Disconnect the display signal cable.
3. Power-on the display.
4. Set the contrast to its maximum position.
5. Set the brightness control to the center detent position.

Check for the following conditions:

• You should be able to vary the screen intensity by adjusting the contrast and brightness controls.
• The screen should be white or light gray, with a black margin (test margin) on the screen.

  Note: The location of the test margin varies with the type of display. The test margin might be on the top, bottom, or one or both sides.

If you do not see a test margin on the screen, replace the display. If there is a test margin on the screen, replace the system board.

The Symptom-to-FRU Index lists error symptoms and possible causes. The most likely cause is listed first. Always begin with General Checkout. This index also can be used to help you decide which FRUs to have available when servicing a computer.

If you are unable to correct the problem using this index, go to Undetermined Problem.

How to Read POST Error Messages

POST error messages are displayed on the screen as 3, 4, 5, or 8 digits. The error messages that can be displayed as shorter POST messages are highlighted in this Symptom-to-FRU Index.

Note: A no beep symptom can be caused by incorrect volume setting of the speaker. Set the speaker volume to its maximum position.

You are here because the diagnostics tests did not identify the failing FRU.

Check the power supply in use (see Power Systems Checkout). If the power supply is operating correctly, return here and continue with the following procedure.

1. Power-off the computer and remove the battery packs from the computer.
2. Remove or disconnect one of the following devices or adapter (do not isolate FRUs that are known to be good).
   1. Non-IBM devices
   2. Modem, printer, mouse, or other external device
   3. IC DRAM card
   4. Hard disk drive (fixed disk drive) or diskette drive
   5. Communications cartridge
   6. Any adapter and device
3. Power-on the computer and start the system program.
4. Press Ctrl+A to run the system checkout. Do not configure the computer. If diagnostics cannot be loaded from the hard disk, try and load them from the Reference Diskette. Test only those adapters and devices still attached to the computer.
5. If the symptom remains, repeat steps 1 through 3 until you find the failing FRU or until all FRUs have been removed.
6. If all of the FRUs listed have been removed and the problem remains, replace the system board.

In the following index, an X in an error message can be any number.

If missing or discolored dots appear on the LCD, carefully read the following note to determine whether you should replace the LCD.

The numbers in this list match the callouts in IBM's exploded view of the CL57 SX, which is not reproduced here; see PDF pages 150–151 of the manual. Indented entries without a number are disconnected or removed as part of the numbered step above them.

Follow the numerical sequence in the FRU removal sequence list and the exploded view to remove or disconnect parts in the correct order. The letters in parentheses in the list indicate screw types. See the Screw Size Chart to match the letters to the correct screw type and size before replacing each screw.

1. Battery Cover
2. Battery Pack
3. Hinge Covers
4. Six Screws (4-EE, 2-C) (One at each bottom corner and two through extensions at bottom of LCD)
5. LCD Rear Cover (To separate panel from rear cover, place screwdriver in small slit in bottom front of LCD panel and release latch.)

   Two Cables from LCD Assembly

6. Four Screws (LL) (Two on each side)

   LCD Assembly

7. Bend Back Thirteen LCD Panel Tabs

   Four LCD Panel Screws (MM) (From back of panel)

8. Separate LCD Panel and LCD Bezel
9. Three Bottom Cover Screws (LL) (At bottom-front)
10. Keyboard Frame
11. Two Screws (MM) (At rear of keyboard)
12. Loosen Keyboard
13. Four Screws (MM) (Look for 13 four times in illustration.)
14. Loosen Top Cover
15. Two Ribbon Cables

    Keyboard (Keyboard can be removed without removing top cover. However, keyboard cables cannot be reconnected with top cover installed.)

    Trackball Cable (At right-rear of keyboard)

16. Indicator Card Cable

    Top Cover (See step 14. Ensure that keyboard is removed before removing top cover.)

17. Two Trackball Assembly Screws (LL)
18. Trackball Assembly
19. Speaker Cable
20. Four Screws (LL) (Two indicator card screws from rear and two speaker retainer bracket screws from bottom)
21. Indicator Card (When replacing indicator card, ensure that speaker volume switch and power-on switch fit into their respective slots in top cover.)
22. Speaker
23. Two Diskette Drive Ribbon Cables
24. Four Diskette Drive Screws (LL)

    Micro Switch Cable

25. Diskette Drive and Mounting Bracket
26. Two Hard Disk Drive Ribbon Cables
27. Four Hard Disk Drive Screws (LL)
28. Hard Disk Drive and Mounting Bracket (Have customer backup all information on hard disk drive before removal. When replacing hard disk drive, use customer's backup Reference Diskette to restore system partition.)
29. Backup Battery
30. Keyboard Control Card Ribbon Cable

    Three Keyboard Control Card Screws (NN)

31. Keyboard Control Card
32. Display Control Card Ribbon Cable (Press and hold metal clips on each side of cable connector.)
33. Two Display Control Card Screws (LL)
34. Display Control Card
35. Two Hinge Support Screws (LL) (On hinge support)
36. Six Screws (4-PP, 2-QQ) and Hinge Assemblies (Three screws on each side)
37. Loosen Hinge Support

    Two Regulator Card Cables

38. Three Regulator Card Screws (LL)
39. Regulator Card
40. Two I/O Connector Ribbon Cables
41. Two Threaded Spacers
42. Three Modem Guide Screws (V)
43. Two Threaded Hex Spacers (At each end of system board)
44. Voltage Converter Cable
45. System Board Cable (upper left)

    System Board and Mounting Bracket (When installing system board, ensure that power control switch on I/O panel is set to On. Also, run Automatic Configuration and set time and date. Transfer math coprocessor (if installed) to new system board.)

    IC DRAM Card Connector (Connected under system board.)

46. Two I/O Connector Screws (LL)
47. I/O Connectors and Cover
48. Six Voltage Converter Card Screws (SS)
49. Two Threaded Spacers (On voltage converter card)

    Battery Cable

50. Voltage Converter Card (Be careful to use correct screws to replace voltage converter. Bottom cover can be cracked.)

Use the chart to match the size and shape of the screws in the computer you are servicing.

System Board

1. System Expansion Connector (150-pin)
2. Display Control Card
3. Serial Connector
4. I/O Panel (Parallel/External Input)
5. Indicator Card
6. Password-Override Connector
7. Backup Battery
8. Communication Interface (Modem/Serial)
9. Diskette Drive
10. Thermal Sensor
11. Hard Disk Drive
12. Trackball/Keyboard Card Connector
13. Dew Point Sensor
14. Voltage Converter
15. Voltage Converter

This section provides related service information on the following:

• Checking Installed Devices
• Power-on Password
• How to Run the Advanced Diagnostics
• Hard Disk Partition
• Restoring the Partition
• CL57 LCD FRU Replacement Notice

A protected partition on the hard disk contains the system configuration data set, system setup programs, and customer and advanced diagnostics. System setup and diagnostic programs can be loaded from this partition by pressing and holding Ctrl+Alt+Del and, as soon as the cursor moves to the upper right corner of the display, pressing and holding Ctrl+Alt+Ins.

To service a computer with an active, unknown, power-on password, do the following.

1. Power-off the computer and unplug the power cord.
2. Remove the keyboard and top cover.
3. Locate the override connector on the system board. Some models use connector J12 (8 pins shown below). Other models use connector J13 (a 2-pin connector).
4. Install a jumper over the pins of the connector as shown.
5. Power-on the computer to erase the password.
6. After POST completes, remove the jumper. Otherwise, you will not be able to reset a power-on password.

To set the password, start the system programs, select Set features from the Main Menu, then select Set password and unattended start mode, and follow the instructions on the screen.

If a computer or hard disk problem prevents system setup or diagnostic programs from being loaded from the protected partition, load and run the programs from the Reference Diskette. If no errors are found, restore the programs to the protected partition on the hard disk using the following procedure.

1. Start the computer with the customer's backup copy of the Reference Diskette installed.
2. Select the Backup/Restore system programs from the Main Menu.
3. Select the Restore the system partition to load the system setup and utility programs, and the customer and advanced diagnostics programs onto the system partition of the hard disk.

If this does not correct the problem, use the backup copy of the Reference Diskette to format the hard disk and then restore the programs to the protected partition. If the problem remains, return to the I998XXXX, I9990303 error code (in the Symptom-to-FRU index).

Note: After the programs have been restored, the Diskette and F1 prompts appear, unless an operating system is present.

System Unit

Options and Adapters

Keyboards

Numeric Keypad